Spring-wheel.



w. E. CRAWFORD.

Patented Feb. 13, 1917.

2 SHEETS-SHEET I.

SPRING WHEEL.

Patented Feb. 13, 1917.

2 SHEETS-SHEET 2.

W. E. CRAWFORD.

APPLICATION FILED SEPT-24, 1915.

ivwuvvvvv 1/1 "omen snares is or tion WILLIAM E. CRAWFORD, OF DEVILSLAKE, NORTH DAKOTA.

' SPRING-WHEEL.

Specification of Letters Patent.

Patented Fab. is, rem.

Application filed September 2 1915. Serial No. 52,447.

:pertains to make and use the same.

This invention relates to spring wheels, and has for its object toprovide a simple and elficient spring Wheel especially designed for useinconnection with motorveh'icles.

With this and other objects in View, the invention consists in the novelconstruction, arrangement and formation of parts as will behereinafterspe'cifically described, claimed and illustrated'intheaccompanying draw- ;ings, in which:

Figure 1 represents a fragmental side elevation Of the wheel, theadjacent hub-carried plate removed and parts being shown in section;

Fig. 2 represents a fragmental sectional view through the spring wheel.

Fig. 8 represents a detail perspective view of one of the springactuated shoes removed, and

Fig. 4 represents an enlarged detail perspectlve view of one of thespacing springs for the shoes removed.- I

Referring to v the drawings in detail,

wherein similar reference numerals desig.

nate corresponding parts, the numeral 5 indicates a hub of the usual orany preferred construction having an integral annular flange 6 formedadjacent its inner end. The opposite end of the hub '5 is externallyscrewthreaded and receives a centrally apertured plate 7, which latteris secured in po- 'sition upon the hub by a nut 8.

A pair of spaced plates 9 are arranged be tween and in sliding contactwith the inner surfacesof the flange 6 and outer' removable plate 7 andare formed with central aper tures 10 of considerably greater diameterthan the internal diameter of the hub 5'. A spacing ring 11 is securedbetween the plates 9 inwardly of the circumferential edges of, thelatter and a plurality of radiating wheel spokes 12 are secured betweenthe plates 9 outwardly of the rim 11 by rivets 13, or other suitablemeans.

The hub 5 is formed centrally with a plurality cf radiating arms 14,which terminate in spaced relation to the ring 11. The outer extremitiesof the arms 1% are slidably received within apertures '15 formedcentrally in inwardly directed sockets 16 carried by the shoes 16,,having the outer surfaces 17 suitably curved to' snugly fit the innersurface of the ring 11. Springs 18 are coiled about the arms 14, engagedbetween the hub 5 and the sockets 16 for normally retaining the ring 11and plates 9 in concentrically spaced relation to the hub 5.

' The sliding movement of the shoes 16 with relation to the ring 11 islimited by a plurality of enlargements 19 formed internally of saidring. The shoes 16 are normally retained in uniformly spaced relation byll-shaped springs 20, having oppositely directed ends 21 engaged withinrecesses 22 formed in the side edges of the shoes 17.

What I claim'is:

1. Asprin'g wheel including a hub, a pair of spaced plates movablerelatively to said hub, spokes radiating from said plates, a ringsecured between'said plates, arms radiating from said hub, socketsslidably receivin the outer terminals of said arms, shoes carried by theoutertermmals' of said sockets and engaged with the inner surface ofsaid ring, springs'interposed between said hub and said ringfor normallyretaining the latter in "spaced relation to said hub, internalenlargements formed in said ring con stituting stops for limiting thesliding movement of said shoes, and a plurality of springs interposedbetween and connecting the ad jacent ends of-the shoes to normallyretain the latter in uniformly spaced relation.

2. A spring wheel including a hub, a pair of spaced plates movablerelatively to'said" hub, spokes radiating from said plates, a

ring secured between said plates, arms radiating from said hub, socketsslidably receiving the outer terminals of said arms, shoes carried bythe outer terminals of said sockets slidably engaged with the innersurface of said ring internal enlargemally retaining said shoes inuniformly 10 ments formed in said ring constituting stops spacedrelation.

to saidhub' said shoes having their opfor said shoes, springs interposedbetween In testimony whereof I aflix my signature the hub and said ringfor normally retaining in presence of two witnesses.

thelatter in concentrically spaced relation WILLIAM E: CRAWFORD. posedside edges recessed, and substantially Vitnesses:

V-shaped leaf springs having outwardly di- J. C. ADAMsoN, rected endsengaged in said recesses for nor- V. GRAM.

Copies of thin patentmay be obtained for five "cents each, by addressingthe Commissioner of Patents,

Washington, D. c."

